CA 15-3

CA 15-3 is a tumor marker for breast cancer.cite journal |author=Duffy MJ, Duggan C, Keane R, "et al" |title=High preoperative CA 15-3 concentrations predict adverse outcome in node-negative and node-positive breast cancer: study of 600 patients with histologically confirmed breast cancer |journal=Clin. Chem. |volume=50 |issue=3 |pages=559–63 |year=2004 |month=March |pmid=14726467 |doi=10.1373/clinchem.2003.025288 |url=http://www.clinchem.org/cgi/pmidlookup?view=long&pmid=14726467] [MeshName|CA-15-3+Antigen]

It is derived from MUC1.cite journal |author=Bearz A, Talamini R, Vaccher E, "et al" |title=MUC-1 (CA 15-3 antigen) as a highly reliable predictor of response to EGFR inhibitors in patients with bronchioloalveolar carcinoma: an experience on 26 patients |journal=Int. J. Biol. Markers |volume=22 |issue=4 |pages=307–11 |year=2007 |pmid=18161663 |doi= |url=]

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